[im-uh
l-mahn, -muhn] 
| a maneuver in which an airplane makes a half loop, then resumes its normal, level position by making a half roll: used to gain altitude while turning to fly in the opposite direction. |
| Im·mel·mann (ĭm'əl-mən, -män') n. A maneuver in which an airplane first completes half a loop and then half a roll in order to gain altitude and change flight direction simultaneously. [After Max Immelmann (1890-1916), German aviator.] |